September 2025 brings several updates to the Svelte ecosystem including Deno support as a package manager, the ability to use await in @const declarations, and new OpenTelemetry tracing capabilities for observability. The release also includes CLI improvements and showcases numerous community projects, learning resources, and new libraries built with Svelte.
Table of contents
What’s new in Svelte and Svelte CLI (sv)What’s new in SvelteKit and its adaptersCommunity ShowcaseSort: